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Long-term Employee Benefits
 9 Months Ended
Sep. 30, 2016
Compensation and Retirement Disclosure [Abstract]  
Long-term Employee Benefits
LONG-TERM EMPLOYEE BENEFITS
Components of Net Periodic Benefit Cost
The following table sets forth the components of net periodic benefit cost for the three and nine months ended September 30, 2016 and 2015:
 
 
 
Three Months Ended September 30,
Nine Months Ended September 30,
 
2016
2015
2016
2015
Components of net periodic benefit cost:
 
 
 
 
Net periodic benefit cost:
 
 
 
 
Service cost
$
2.4

$
2.7

$
7.5

$
9.1

Interest cost
3.7

3.9

11.5

13.1

Expected return on plan assets
(3.0
)
(3.7
)
(9.6
)
(11.0
)
Amortization of actuarial loss, net
0.1

0.2

0.2

0.7

Amortization of prior service credit, net
—

—

—

(0.1
)
Net periodic benefit cost
$
3.2

$
3.1

$
9.6

$
11.8

Net periodic benefit gains associated with other long-term employee benefits consisted of amortization of prior service credits of $0.9 million and $2.8 million for the three and nine months ended September 30, 2015, respectively. At September 30, 2016, there were no liabilities associated with other long-term employee benefits as the plan was effectively settled at December 31, 2015.